Answer:

Explanation:
From the question we are told that
Wind speed
Turbine blade diameter 
Air density 
Mechanical energy 
Generally the power generation potential of the wind turbine X is mathematically given as

Where



Therefore




Answer:
The maximum speed that the truck can have and still be stopped by the 100m road is the speed that it can go and be stopped at exactly 100m. Since there is no friction, this problem is similar to a projectile problem. You can think of the problem as being a ball tossed into the air except here you know the highest point and you are looking for the initial velocity needed to reach that point. Also, in this problem, because there is an incline, the value of the acceleration due to gravity is not simply g; it is the component of gravity acting parallel to the incline. Since we are working parallel to the plane, also keep in mind that the highest point is given in the problem as 100m. Solving for the initial velocity needed to have the truck stop after 100m, you should find that the maximum velocity the truck can have and be stopped by the road is 18.5 m/s.
Explanation:
Answer:

Explanation:
The figure of the problem is included below as attachment. The equations of equilibrium are presented below:



The system of equations are:


![N_{1} \cdot [(0.75\,m)-0.2\cdot (0.35\,m)] - N_{2}\cdot (1.25\,m) = 0](https://tex.z-dn.net/?f=N_%7B1%7D%20%5Ccdot%20%5B%280.75%5C%2Cm%29-0.2%5Ccdot%20%280.35%5C%2Cm%29%5D%20-%20N_%7B2%7D%5Ccdot%20%281.25%5C%2Cm%29%20%3D%200)
The solution of the system is:
,
and 
The shortest time to reach a speed of 80 km/h is:


A diverging lens is used to permit clear vision of an object placed at infinity. The focal length of the lens is -100 cm.
<h3>What is focal length?</h3>
The focal length is half of the radius of curvature of the focal lens.
By the lens maker formula,
1/f = 1/v +1/u
where, v is the image distance and u is the object distance.
Give, the object is at infinity and the image must form at 100 cm, the the focal length will be
1/f = 1/ -100 + 1/∞
f = -100 cm
The focal length must be -100 cm for the diverging lens.
Learn more about focal length.
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